Finding the Fourth Proportional to 2,066.91, 3,100.50 and 768.39

Step by Step Solution

1. Step 1: Write the proportion equation
   2,066.91 : 3,100.50 = 768.39 : x
2. Step 2: Convert to fraction form
   2,066.91/3,100.50 = 768.39/x
3. Step 3: Cross multiply
   2,066.91x = 3,100.50 × 768.39
4. Step 4: Simplify right side
   2,066.91x = 2,382,393.20
5. Step 5: Solve for x
   x = 2,382,393.20/2,066.91
6. Step 6: Final answer
   x = 1,152.64